Search Results for: spindle-cell hemangioma

Pigmented poroma with unusual location and dermatoscopic features

Pigmented poroma with unusual location and dermatoscopic features

…HE, 40X). [Copyright: ©2012 Kassuga et al.] Figure 4. Pigmented poroma. Epithelial aggregate made up of poroid and cuticular cells. The poroid cells have small, round, uniform nuclei and scant cytoplasm and the cuticular cells display larger nuclei…

Histologic Diagnosis of Inflammatory Skin Diseases

Confusing Terms (to be Avoided Scrupulously)

…dermis or the upper part of the dermal eccrine duct has thickened consequent to an increase in number greatly of constituent cells, a circumstance referred to generally as “pseucarcinomatous hyperplasia,” we will characterize the change…

Differential Diagnosis in Dermatopathology

Pretibial myxedema vs. Scleromyxedema

A systemic disease, which manifests itself in the skin first as violaceous macules and patches that tend to progress to papules and plaques, and sometimes to nodules and tumors, all of which represent hyperplasia of endothelial cells.

Differential Diagnosis in Dermatopathology

Papular mucinosis vs Interstitial granuloma annulare

A systemic disease, which manifests itself in the skin first as violaceous macules and patches that tend to progress to papules and plaques, and sometimes to nodules and tumors, all of which represent hyperplasia of endothelial cells.

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…not qualify as an inflammatory disease because of the absence of inflammatory cells. 11.18.2A: No infiltrate of inflammatory cells + 11.18.2B: Fibrocytes and mast cells amidst mucin in the upper part of the dermis = Scleromyxedema At scanning…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…stellate 8. No apparent increase in amount of collagen 8. Increase an amount of basophilic-staining collagen 9. Hair follicles spared by the process 9. Hair follicles destroyed by the process 10. No perivascular infiltrate of inflammatory cells 10….

Differential Diagnosis in Dermatopathology

Morphea, late stage vs. Collagenous nevus

A systemic disease, which manifests itself in the skin first as violaceous macules and patches that tend to progress to papules and plaques, and sometimes to nodules and tumors, all of which represent hyperplasia of endothelial cells.

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…scarring processes, e.g., dermatofibroma. 10.70.2A: Panniculitis, lobular + 10.70.2B: Interwoven fascicles of plump oval and spindle-shaped fibrocytes in conjunction with fibrillary bundles of collagen, abundant mucin, scattered lymphocytes, and…